What is the BLOB data type?

A BLOB (binary large object) is a varying-length binary string that can be up to 2,147,483,647 characters long. Like other binary types, BLOB strings are not associated with a code page. In addition, BLOB strings do not hold character data.

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What is BLOB full form?

BLOB stands for binary large objects, which are used for storing binary data, such as an image. What is BLOB example? For example, a photo album could be stored in a database using a blob data type for the images, and a string data type for the captions. Because blobs are used to store objects such as images, audio files, and video clips, they often require significantly more space than other data types.

How do I view BLOB images?

For displaying BLOB images to the browser, we have to create a PHP file to do to following.

1. get image data and type from MySQL BLOB.
2. Set the content-type as image (image/jpg, image/gif, …) using PHP header().
3. print image content.

What is BLOB in PostgreSQL? Blob (Binary large object) is an Oracle data type that is used to store binary data like contents of a file or information like audio, video, and images. PostgreSQL does not have the Blob data type directly, but we can work with it using the methods below.

Why is BLOB used?

BLOB stands for Binary Large Object. It is defined as the chunk of binary data being stored as a single entity in a database system. BLOBs are used primarily to hold multimedia objects like images, videos, and sound, though they can also be used to store programs. Who invented BLOB?

Blobs were originally just big amorphous chunks of data invented by Jim Starkey at DEC, who describes them as "the thing that ate Cincinnati, Cleveland, or whatever" from "the 1958 Steve McQueen movie", referring to The Blob.

What is difference between BLOB and CLOB?

A CLOB is considered a character string

Blob	Clob
This is used to store large binary data.	This is used to store large textual data.
This stores values in the form of binary streams.	This stores values in the form of character streams.

Where are blobs stored? A Blob is stored in the memory much like any other ArrayBuffer . It's stored in the ram, just like the other objects declared in the window. Looking at the chrome://blob-internals , we can see how its physically stored in the ram.

How do blobs work?

The Blob object represents a blob, which is a file-like object of immutable, raw data; they can be read as text or binary data, or converted into a ReadableStream so its methods can be used for processing the data. Blobs can represent data that isn't necessarily in a JavaScript-native format.